摘要
采用三唑类复配剂秧苗健壮灵浸种，能有效控制水稻秧苗的伸长生长，促进分蘖发生，降低苗高，增加分蘖，使秧苗忍耐干旱和低温的能力显著增强。秧苗健壮灵浸种之后，秧苗体内ＧＡｓ和ＩＡＡ含量显著降低，平均比对照（清水浸种）降低５８．７％和５５．４％；ＡＢＡ和ｉＰＡｓ含量明显增加，平均比对照增加３２．２％和３５．４％，这是秧苗健壮灵调节水稻秧苗生长的主要机理。秧苗健壮灵浸种能明显减缓干旱和低温胁迫过程中ＳＯＤ、ＣＡＴ活性的下降和ＭＤＡ的积累，促进ＡＢＡ含量的增加，这是秧苗健壮灵增强水稻秧苗抗逆能力的主要生理基础。
Seedlingvigorousagent(SVA)isacompoundconsistedofplantgrowthregulator(Triazole)andfungicide.130mg/LSVAcouldeffectivelycontrolplantheightandpromotedtilleringofriceseedling,aswellasenhancedthetoleranceofriceseedlingtodroughtandchillingstress.AfterseedbeingsoakedwithSVA,GAsandIAAcontentinriceseedlingdecreasedapparentlywhileABAandiPAscontentincreasedobviously.Comparedwithcontrol(soakingseedwithpurewater),theaveragecontentofGAsandIAAdecreasedby587%and425%,respectively.ItwasthemainmechanismforSVAtoregulatethericeseedlinggrowth.Duringtheperiodofdroughtandlowtemperaturestress,thedecreaseofSODandCATactivity,theaccumulationofMDAandtheincreaseofABAcontent inriceseedlingsbeingtreatedwithSVAweresloweddowntoacertainextent,whichwasthemainphysiologicalbaseforSVAtoimprovethetoleranceofriceseedlingstodroughtandlowtemperaturestress.
出处
《江苏农业学报》
CSCD
北大核心
1999年第2期77-81,共5页
Jiangsu Journal of Agricultural Sciences
基金
农业部"95农-17-01"资助
江苏省应用基础研究项目
